Lock washer



March 25 1924. 7

F. E. SEIFERT LOCK WASHER Filed Nov. 28. 1921 attorney;

Patented Mar. 25, on;

' Leena) l: nor SOMERVILLE, NEW

; LOCK wnsnnn. a.

To allwkom itinay concem:

Be it known that I. Frame E. SEIFERT,

a citizen of the United States, residing" at Somervill'e, in the'county of-Somerset and State of New J ersey,ihave invented a new and useful Lock VVashenbf which the following is a specification. 1 This invention relates 'to lock washers, the

primary 'object or the invention being to a washer. having means forming a 0 provide 7 part thereof forvcontactingmith the nut 01- bar associated therewith "for locking the nut'a'gainst movement.v

Q Another object of the invention is to pro'- vide a washer of this character which'will closely engage is applied, thereby tering under the washer.

I VVith' the foregoing and 'other objects in View which will appear as the description proceeds, the invention invention herein disclosed, may be made within the scope of what is claimed, without Referring to the-drawing; Figure leis a side elevational view of a A departing from the spirit of the invention.

washer constructed in accordance with the present invention, and showing the same as appliedto lock a nut. L

' Figure 2 is a plan view of the'washer. Referring to the drawing -iini -detail, the a reference character 5 designates a bar through which the bolt indicated at 6. extends, Hand to which bolt the nut 7 is sesoured.

I 'a nmion meamvember as, 1921. Serial No. 518,338.

tongues 9 being formed by tions of the washertherefroni, and twisting the article to which the same 1 preventing moisture enresides in the, com" bination and arrangement of parts and in 4 the details o f'eonstruction hereinafter de scribed and claimed, it-be iiig understood that 25 changes in the precise embodi-ment of the 'with the periphery of the The washer forming theexeuce of this 40 invention is indicated it-'8, and is shown as substantially -fi'usto-conical in formation,-

stamping' porthe stamped portions lipwardly to cause one" of the respective corners thereof to bite into the nut 7 associated therewith, to prevent reverse movementof the nut.

It will be seen that when a nut is positioned over a washer of this character, the 5!) portion of the rwasher contacting with the bar 5 is embedded in the bar, and due-to the close engagementbet'ween the bar and washer, all possibilities of moisture entering under the washer is eliminated.

. Having thus described the invention, what is claimed as new is v A; lock-washer comprising in combination, a frustomonical body portion, said body portion having slots formed. transversely there of, and havingslots communicating with the transversely extending slotgthe last mentioned slots extendingflin para lel relation body portion, the sections of the body portion between the transverse slots being twisted to extend upwardly presenting'piercing corners to engage a nut, and said-piercing corners adapted to move over the contacting surface of a nut when the frusto-conical body portion is depressed. A

In testimony that Iclaim the foregoing as my own, Lhavehereto aflixed my signature in the presence of two \vitnesses.

' FRAN K EMIL SEI'FERT.

Witnesses:

' JOHN C. Fosrnn,

r JOHN J. DEGNAN.- 

